PHP MySQL Update
The UPDATE statement is used to modify data in a table.
Update Data In a Database
The UPDATE statement is used to update existing records in a table.
Syntax
UPDATE table_name
SET column1=value, column2=value2,...
WHERE some_column=some_value
|
Note: Notice the WHERE clause in the UPDATE syntax. The WHERE clause
specifies which record or records that should be updated. If you omit the WHERE
clause, all records will be updated!To learn more about SQL, please visit our SQL
tutorial.
To get PHP to execute the statement above we must use the mysql_query() function. This function is used to
send a query or command to a MySQL connection.
Example
Earlier in the tutorial we created a table named "Persons". Here is how it
looks:
| FirstName |
LastName |
Age |
| Peter |
Griffin |
35 |
| Glenn |
Quagmire |
33 |
The following example updates some data in the "Persons" table:
<?php
$con = mysql_connect("localhost","peter","abc123");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("my_db", $con);
mysql_query("UPDATE Persons SET Age = '36'
WHERE FirstName = 'Peter' AND LastName = 'Griffin'");
mysql_close($con);
?>
|
After the update, the "Persons" table will look like this:
| FirstName |
LastName |
Age |
| Peter |
Griffin |
36 |
| Glenn |
Quagmire |
33 |
Need an easy way to get data into XML, or transform XML to another format?
MapForce lets you map XML data to/from any combination of XML, database, flat file, Excel 2007, XBRL, or Web services data.
Then it transforms data instantly or auto-generates royalty-free data integration code for recurrent conversions.
Download a free, fully functional 30-day trial to experience the following features:
- Easy-to-use, graphical data mapping interface
- Instant data transformation
- XSLT 1.0/2.0 and XQuery code generation
- Java, C#, and C++ code generation
- Advanced data processing functions
- Support for all major relational databases including SQL Server, IBM DB2, Oracle, and more
- Visual Studio & Eclipse integration
Download a fully-functional trial today!
|
|
|
|
